Question two

The number of employees daily wages per employee and variance of the wages per employee for two factories are given below;

Factory A Factory B

Number of employees 50 100

Average daily wages per employee (sh) ) 120 85

Variance of daily wages per employee 9 16

Required;

In which factory is there greater variation in the distribution of daily wages per employee?

Suppose in factory B the daily wages of an employee were wrongly noted as sh 120 instead of sh 100. What would be the correct variance for factory B?